<?php 

// $name="kkkkkkk";
// echo $name;
// var_dump($name)

// $a=1;
// $b=&$a;
// $b=2;
// echo $b;

// $n="name";
// $$n="second";
// echo $name;


// 在网址上分别设置name，id，yy，用GET方式传递
$tt=$_GET["name"];
echo $tt;

$id=$_GET["id"];
echo $id;

echo $_GET["yy"];

var_dump(gettype($id));

$shuzi=45;
var_dump(is_array($shuzi));




$yuanxing="40bb";
$zhuanhuan=settype($yuanxing, integer);
var_dump($zhuanhuan) ;





// echo $_POST["username"];
// echo $_REQUEST["pass"];
// echo $_POST["pass"];





 ?>



<!--  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html lang="en">
 <head>
 	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
 	<title>Document</title>
 </head>
 <body>
 	<form action="eeee" method="POST">
 		<input type="text" name="username">
 		<input type="password" name="pass">
 		<input type="submit" value="登录">
 	</form>
 </body>
 </html> -->